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Crankcase Pressure Test

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  1. Ensure engine is at normal operating temperature. Remove turbocharger inlet pipe ducting. Remove inlet pipe and elbow that connects to air filter housing. Using cap provided in Engine Pressure Tester (014-00761), block air filter housing outlet. Install a protective screen over turbocharger inlet.
  2. Screw Crankcase Orifice Restrictor (5631) and Crankcase Pressure Test Adapter (014-00743) into oil fill cap hole. Connect adapter to pressure gauge (No. 4) at engine pressure tester (014-00761). Ensure gauge has been zeroed.
  3. Observe gauge and briefly raise engine speed to 3500 RPM. DO NOT block hole at top of crankcase orifice restrictor. Pressure should be less than 6 in. H(2)O. If pressure is 6 in. H(2)O or more, check engine mechanical condition (compression rings, cylinder bores, valves, etc.). Repair as necessary.
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